MMD Textures missing vertices after importing
There are issues with the vertices in your models.
First, I would recommend Removing Doubles and Recalculating Normals.
Select all vertices, merge vertices by distance (M &gt; By Distance or Right-Click &gt; Merge Vertices &gt; By Distance), and recalculate normals (F3 &gt; &quot;Recalculate Normals&quot;)
If that didn't work, try Clearing Custom Split Normals Data
Select all vertices, press F3 and search for (F3 &gt; &quot;Clear Custom Split Normals Data&quot;)
Let me know if this helps. :)